2 18-1 Renewable Energy Today Objectives 1. List six forms of renewable energy, and compare their advantages and disadvantages. 2. Describe the differences between passive solar heating, active solar heating, and photovoltaic energy. 3. Describe the current state of wind energy technology. 4. Explain the differences in biomass fuel use between developed and developing nations. 5. Describe how hydroelectric energy, geothermal energy, and geothermal heat pumps work.
3 Renewable Energy – energy from sources that are constantly being formed Solar, wind, hydro, and geothermal
4 Solar EnergyMost all renewable NRG comes directly or indirectly from the sun
5 Passive Solar EnergyUse the sun’s NRG to heat something directly
6 A passive solar homeCeilings heavily insulatedThick walls and floorsSouth-facing double paned windowsShade trees for summerInsulated windows
29 18-2 Alternative Energy and Conservation Objectives 1. Describe three alternative energy technologies. 2. Identify two ways that hydrogen could be used as a fuel source in the future. 3. Explain the difference between energy efficiency and energy conservation. 4. Describe two forms of energy-efficient transportation. 5. Identify three ways that you can conserve energy in your daily life.
30 Look around the room…..can you find any instances were energy is being wasted??
31 Alternative energy- describes NRG sources that are still in development
32 Tidal PowerUses the 2 tide changesTide difference needs to be around 16 mCost to build is high